git subrepo clone https://github.com/mailcow/mailcow-dockerized.git mailcow/src/mailcow-dockerized
subrepo: subdir: "mailcow/src/mailcow-dockerized"
merged: "a832becb"
upstream: origin: "https://github.com/mailcow/mailcow-dockerized.git"
branch: "master"
commit: "a832becb"
git-subrepo: version: "0.4.3"
origin: "???"
commit: "???"
Change-Id: If5be2d621a211e164c9b6577adaa7884449f16b5
diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php
new file mode 100644
index 0000000..d69a3a6
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace RobThree\Auth\Providers\Time;
+
+/**
+ * Takes the time from any NTP server
+ */
+class NTPTimeProvider implements ITimeProvider
+{
+ public $host;
+ public $port;
+ public $timeout;
+
+ function __construct($host = 'time.google.com', $port = 123, $timeout = 1)
+ {
+ $this->host = $host;
+
+ if (!is_int($port) || $port <= 0 || $port > 65535)
+ throw new \TimeException('Port must be 0 < port < 65535');
+ $this->port = $port;
+
+ if (!is_int($timeout) || $timeout < 0)
+ throw new \TimeException('Timeout must be >= 0');
+ $this->timeout = $timeout;
+ }
+
+ public function getTime() {
+ try {
+ /* Create a socket and connect to NTP server */
+ $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
+ socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, ['sec' => $this->timeout, 'usec' => 0]);
+ socket_connect($sock, $this->host, $this->port);
+
+ /* Send request */
+ $msg = "\010" . str_repeat("\0", 47);
+ socket_send($sock, $msg, strlen($msg), 0);
+
+ /* Receive response and close socket */
+ if (socket_recv($sock, $recv, 48, MSG_WAITALL) === false)
+ throw new \Exception(socket_strerror(socket_last_error($sock)));
+ socket_close($sock);
+
+ /* Interpret response */
+ $data = unpack('N12', $recv);
+ $timestamp = sprintf('%u', $data[9]);
+
+ /* NTP is number of seconds since 0000 UT on 1 January 1900 Unix time is seconds since 0000 UT on 1 January 1970 */
+ return $timestamp - 2208988800;
+ }
+ catch (Exception $ex) {
+ throw new \TimeException(sprintf('Unable to retrieve time from %s (%s)', $this->host, $ex->getMessage()));
+ }
+ }
+}